The cable that I need is 4-pin 3,5 jack to USB-A. I found about 12 different schemes that include these parts, but I am afraid to experiment on the player, as the power wires connected to data pins can burn the player. I hope someone can check the order of pins on his cable and list it here. It is an easy job - you just need a multimeter or a battery with a lamp and wire.
I was going to do it with my cable when I got it, but lost it before I could do so. Shame on me.